Low order fault interpretation method based on construction mode guidance

A fault interpretation, low-sequence technology, applied in the field of geophysical exploration, which can solve the problems of inconsistent geological laws and poor identification effect.

Inactive Publication Date: 2016-02-17
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

However, these techniques are mainly aimed at high-sequence faults, and the identification effect on low-sequence faults is poor. At the same time, because the identification proces

Method used

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  • Low order fault interpretation method based on construction mode guidance
  • Low order fault interpretation method based on construction mode guidance
  • Low order fault interpretation method based on construction mode guidance

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Embodiment

[0037] Many faults developed in the Paleogene period in the Dongying sag controlled the formation and evolution of the sag. There are mainly three groups of basement normal faults in the northeast direction, northwest direction and nearly east-west direction. The fault activities represent the tectonic activities of the Dongying sag in the Paleogene period. The reservoir types are mainly fault-block reservoirs, and there are a large number of low-sequence faults in complex fault-block reservoirs, which control the distribution of remaining oil and the relationship between oil and water. The method of the invention is used to identify and explain the low-order faults in this area.

[0038] The first step is to load the post-stack high-precision 3D seismic data volume, well logging data, and production data into the computer with 32-bit data accuracy. In this example, Schlumberger Geoframe software and petrel software are used.

[0039] The second step, first, is to analyze and ...

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Abstract

The invention discloses a low order fault interpretation method based on construction mode guidance, belonging to the geophysical exploration technology field. The low order fault interpretation method comprises steps of loading superposed high accuracy three-dimension earthquake data body, well logging data and production data loading, earthquake data analysis and processing, performing three-dimension visualization browsing on the processed earthquake data body to determine the basic tectonic framework of a main fracture system, establishing a low order fault interpretation mode by combining with the local structure stress field according to the combination relation of a main fault and a secondary fault, (5) utilizing technologies like a frequency division coherence cube, a curvature body, rim detection and an ant body to perform identification of a plane and a profile and combination on the low order fault, (6) utilizing production performance to detect the low order fault interpretation result and regulating the fault interpretation mode to obtain a fracture system graph matching with petroleum reservoir exploitation. The invention plays an important role in distribution of the potential of the residual oil of the complicated fault block oil and gas reservoir and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of geophysical exploration, and relates to a low-sequence fault interpretation method under the guidance of a structural model. Background technique [0002] With the deepening of exploration and development of oil and gas fields, the role of faults has attracted more and more attention, especially low-sequence faults. At present, many old oilfields in eastern China have entered the stage of ultra-high water cut, and a series of factors such as complex structures, broken fault blocks, and complex oil-water relationship restrict the further exploration and development of oil and gas. Therefore, it is necessary to strengthen the detailed study of structures, identify and describe low-sequence faults, clarify the occurrence and cutting relationship of low-sequence faults, further understand the distribution of remaining oil, and improve oil and gas recovery. [0003] A fault is a geological phenomenon in which...

Claims

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Application Information

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IPC IPC(8): G01V1/30
CPCG01V1/30G01V1/301
Inventor 韩长城林承焰董春梅任丽华张宪国
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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